Nut-lock.



No. 705,743. Painted 1m29; |902.

c. L. nunmvuw NUT` LOCK.

(Application mea mv. 29, 19m.)

(lollodel.)

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f/ f cf 'l l L l lull! l1 i I l l y N Al 4UNITED STATES` PATENT l Ormea.

CHARLES L. DUNHAM, OF CENTERVIEV, OHIO.

NUT-LOCK. g

sienclnrcnrroivfomnng par@ of Letters Patent Nd? 795,743, vdated July 2e, 1902. Application iled November 29, 1901. Serial NOSLOZL No model.)

T0 all whom away carecen/1.: Be it known that I, CHARLES L. DNHAM,

a citizen of the United States, residing at Cen-` terview, in the county of 'Monroe and State of' Ohio, have invented certain new and useful Improvements fin NutfLocks; and I do declare the following to'be a full, clear, and exact descriptionof the' invention, such as will enable others skilledlin the art to which it appertains to make and use the same, reference being had to theacconipanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention',` has hrelation to improve- :ments in that classof devices known as nutlocks 5 and itconsists in the novel construction of the nut, all as will be hereinafter fully explained. i

The annexed'drawings, to which reference is made, fully illustrate my invention, in which* Figure l represents a side view of an ordinary screw-threaded bolt having my device applied thereto and showing the same in an unlocked position. Fig. 2 is also a side View of the same, showing the device in a locked position, preventing the nut from turning in either direction upon thebolt.V Fig. 3 is a face view of one of the sections of the nut having the lug; and Fig. 4 is a face view of.

the other section, showing the recess in the edge thereof. i

Referring by letter to the accompanying drawings,A designates a bolt of any Wellknown construction having the usual male screw-threads.

B indicates a nut which is constructed in a peculiar manner, the same having the central opening a similar to the well-known nuts and having female screw-threads to receive the male threads of `a bolt. This nut B is designed asA a whole a'nd'whfen in nseIupon a bolt is so representedand forms aninvdividual female screw-threaded nut'. Said nut is divided about its center, providing sections b and c, and the innerjor meeting faces of each sec- .tion are perfectly dat and smooth, and in forming this nut the adjacent face of each section is made on a bias, which provides each inner face tl and e with a beveled surface, and the` front portion ZJ is provided near or at its upper edge with a lug or projection f, while `theinner portion c is constructed with a' recess g, having atneach end shouldersv or stops h h for a purpose presently explained.

Having thusdescribed the construction of my individual nut, I will now proceed and explain its uoperation In applying my nut toa male screw-threaded bolt ofHanywell-known construction the nut is screwedthereonin the usual manner, and when the nut is screwed either home or at any desired Vpoint on the bolt the front of the nut is thenturned in an opposite direction to that of screwing it on said bolt, thus through the medium of the inner smooth beveled faces thenut expands in the direction of the bolt uponwhich it may be screwed, thus iirmly and with `immense pressure of the female threads` off saidv nut grasp the male screw-- threads of theloolt and hold the nut securely and preventing it from turning in either direction. In unlocking the nut the operator simply gives the front of said nut a turn in a reverse direction to that in locking it, thus bringing the nut to its normal position or un lockedcondition.

It will be observed from the above descrip tion, when'tal'en in connection with the accompanying drawings,- that my nut is applicable to any ordinary bolt having male screw threads, and when locked to a bolt the same is prevented from accidental displacement. The lug and shouldered recess are designed to limit the turning of the front of the nut.

What I claim, and desire to secure by Let ters Patent, is-jj l. The Within-described nutlock, comprising two sections, one section having an in ward-projecting lug and the other section be ing provided with a`recess, having shoulders at each end thereof, said sections` having ad jacent inclined faces, said inclinations er;a tending in a straight plane from one'side of the nut to the opposite side, substantially as described.

, 2. A'nut applicable to screw-threaded bolts, the same being divided about its center in a diagonal plane, forming two sections, the ad- IOO In testimony whereof I afx my signature in presence of two witnesses.

CHARLES L. DUNHAM.

Vtnesses:

GEO. E. FREoH, E. H. BATES. 

